Chelation therapy may decrease the amount of porphyrin (marker of metal exposure) in the urine of children with autism.
This study was designed to see if porphyrin levels are higher in the urine of people with autism as compared to the urine of people without autism. Porphyrins can be found in the blood and they bind metal such as iron. Higher levels of certain porphyrins in the urine may suggest that the person has been exposed to mercury or other heavy metals. The study looked at patients with autism who went to the Genetic Centers of America for testing. The study found that people with autism had higher levels of the porphyrins that may signal mercury exposure. The authors tested the urine in two labs and found the results to be the same in both labs.
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